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eng.green-ampt-infiltration Calculator
Calculates infiltration rate and cumulative infiltration using the Green-Ampt model from soil hydraulic properties. The Green-Ampt model is physically based (unlike Horton's empirical model) — it uses soil porosity, wetting front suction, and saturated conductivity.
Inputs
Hydraulic Conductivity Mm Hr
Amount per unit of time or per unit quantity. Check the denominator before interpreting.
Suction Head Mm
Reference formula or conversion factor shown for context.
Initial Moisture Deficit
Reference formula or conversion factor shown for context.
Time Hours
Duration of the process. Make sure units match the rate inputs (seconds, minutes, or hours).
Results
infiltration rate f (mm/hr)
The proportional relationship between two quantities.
cumulative infiltration F (mm)
The proportional relationship between two quantities.
saturated K (mm/hr)
The value at the specified point or condition.
Green-Ampt: f = K(1 + ψΔθ/F)
Sample size or count used in the calculation.
soil type guide
The classification or type assigned based on the inputs.